Collapsible tire-rim.



A. L. OTTENAD.

COLLAPSIBLE TIRE RIM.

APPLICATION FILED 0CT.26.1914.

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COLLA?$IBLE TIRE-EH11".

Specification of Letters Fctcnt.

Patented nee. c, leis.-

Application filed October 26, 1914. Serial No. 868,588.

To all whom it may concern Be it known that l, ARTHUR L. Urrnuno, a. citizen of the United States, residing in the city of St. Louis, Missouri, hive in vented new and useful Improvements in Collapsible Tire-Rims, of which the following is e specification, reference being had by' suchpneumeticforimilar tires may be cerriedfi-cady inflated, suspended from the sides or heck of thei i'achinc,,ss extra or emergency tires, they be readily end easily pieced upon the Wheel proper to re- 1 place a, deflated, punctured or otherwise injured tire. I But it list-cell known that in order to remove one off such tires from the rim ordinerily employed, requires consid-;

erehletime and labor, as the tire has to he pried loose from its iced Within the concave rim.

The main purpose of my invention, therefore, is "to produce a collapsible tire rim or support of the demountahie type, so constructed that whenever it becomes necessary for any purpose to remove the tire from the supporting rim, or toreplace said tire thereon, thismsy be accomplished most easily, conveniently and expeditiously,.by merely collapsing the the rim proper, so that, the tire itself may be readily taken of? or placed back upon the rim,

Another object oiffiny invention is to produce such a tire rim or its cheapest, siinplest and. most practical and. efilcient form.

In a known form of construction of e collapsible rim, the rim is at one point entirelydivided, so that the free ends thereof 'lieng, entirely independent. of one another "when the rim in collapsed condition,

and the ends merely shut egeinst one another when the tire is inflatedsnd the supporting rim is extended accordingly. In

' this form of construction therefore, the rim is greatly weakened at this point of division', and which difiicuity 13 entirely obviated in my -form of construction. In onother knowform of construction, one at least of the hin 'es joining the sections isa double hinge, and is placed so far back along the main rim section, as to likewise Weaken the rim a Whole at the points Where the severed ends meet. In this form 01' construction also, the degree of collapse per mitted the rim as a Whole is quite limited.

W ith the objects therefore of producing a tire rim of the demountable' type, having the maximum of advantage and the minimum of disadvantage of this type, attention is called to the following specification, illustrste'cl hy the accompanying drawings, in Which- Y Figures 1', H, III, IV, and V show in detcil the construction of my tire-rim, the method of hinging the sections together and the preferential form of central hinge and its construction and operation.

Referring more particularly to the drawings, my collapsible rim is made up or" four sections hinged rigidly together at their ends by the hinges 5, 6, 7, and 8 in such manner as to permit the two shorter sections 21 and 24' (of the revised numbering).

In the special form of central hinge shown in Figs. 1, H, 111, 1V, and V, it Will be seen thzit the sides of the tire rim es represented at 20, 21, 2e and 25, meet to other at an angle, when the hinge isolose and that the knuckle 23 of this hinge does not coincide with the point of juncture of said sides of the tire rim, but is loceted along the bottom' of the tire rim at a. point approximately from one-half inch to an inch distant from said point of juncture of the sides of the tire rim. The merit of this form of structure of such hinge is that the hinge Will open perfectly, in this form, and will likewise close and form a perfectly smooth and continuous tire-rim surface with no breaks or gaps Whatever.

The. Whole rim, its elements and comes" series, as herein described, are of course to be constructed of such materials, and in such proportions and dimensions of inter-relation, as when assembled vill form a complete and perfectly working hole, the best calculated to carry out the purposes of my invention.

wardly. \Vhen the tire is mounted, the auxiliary hinged segment is then pressed down and locked, in manner shown, in order to render the whole firm and secure. In other respects my rims are to be constructed in the customary manner form and design and are to be mounted upon the wheel base proper by means of the clamps commonly employed. lt will be seen that my invention greatly expedites the work of replacing tires upon the rims.

Although I have herein described and set forth certain specific manner and methods of construction of my said improvements, I reserve the right to modify the same in minor details, not departing from the spirit of my invention, so as best to construct my improvei'nent to meet practical demands.

Having thus described my invention, what I claim to be new and patentable is:

A collapsible tire rim made up of a plurality of rim segments hinged together in circuit from their extremities so that at least two of said segments will buckle inwardly, the hinge of the inwardly buckling joint being recessed back from one end of the joint and forward from the other end of the joint; said ends of said joint being obliquely cut away, so as to allow said joint to open freelv and to close forming a continuous rim surface, as shown.

ARTHUR L. OTTENAD;

Witnesses S. CoLEswoRTHY, N. S. BURNS, Jr. 

